25274017451 has 2 divisors, whose sum is σ = 25274017452. Its totient is φ = 25274017450.

The previous prime is 25274017411. The next prime is 25274017459. The reversal of 25274017451 is 15471047252.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25274017451 - 2¹⁸ = 25273755307 is a prime.

It is a super-3 number, since 3×25274017451³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (25274017459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12637008725 + 12637008726.

It is an arithmetic number, because the mean of its divisors is an integer number (12637008726).

Almost surely, 2^25274017451 is an apocalyptic number.

25274017451 is a deficient number, since it is larger than the sum of its proper divisors (1).

25274017451 is an equidigital number, since it uses as much as digits as its factorization.

25274017451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78400, while the sum is 38.

The spelling of 25274017451 in words is "twenty-five billion, two hundred seventy-four million, seventeen thousand, four hundred fifty-one".